According to my [limited] reading of MOND, it revolves around an unknown function μ(x). That means it could be adjusted to account for this. Which is a handwavium thesis, but that's what I like about it: how long have we been doing science for? Are we so arrogant that we can claim to know nearly everything? What if we simply started from the beginning? That is the essence that MOND captures.

The fact that galaxies form and light is being bent is not evidence: it is the problem. We don't actually have any classical scientific evidence of the stuff. Dark matter is handwavium. It may be real, but it not being is just as plausible. When the Earth was flat and the universe revolved around it, we solved problems with our theories by adding escape clauses to them: epicycles. An effect was explained with an effect, and dark matter fits that's profile perfectly.

MOND could be incorrect, but it is valuable as an alternative line of thought. There needs to be more like it. Science needs to get into the routine of failure once again, we are making no progress without it.